Q&A - P4 Math

[pineapple tarts]

MathIzzzFun:

pineapple tarts:

Sorry, my question was wrong. Correction below.


Mary spent $40 on 4 hairclips and 4 hairbands. 2 hairclips cost as much as 3 hairbands. FInd the cost of 1 hairband.

Hi

4 clips + 4 bands = $40
2 clips + 2 bands = $ 20
Since 2 clips = 3 bands, 3 bands + 2 bands = $ 20 ie 5 bands = $20, so 1 band = $4

cheers.

Many thanks MathIzzzFun,

Can I ask, I keep seeing it as 3 bands + 3 bands = $20.
I cannot see 3 bands + 2 bands. pls enlighten me.

[just888]

pineapple tarts:

MathIzzzFun:

Many thanks MathIzzzFun,


Can I ask, I keep seeing it as 3 bands + 3 bands = $20.
I cannot see 3 bands + 2 bands. pls enlighten me.

Hi pineapple tart, it was stated in the question that 2 hair clips is the price of 3 hair bands. Since 2clips + 2 bands = 20
Therefore replacing the 2 clips with the clips 3 bands you will have: 3 bands + 2 bands bands=20

[pineapple tarts]

OMG, I must be blind !! :thankyou:

[MathIzzzFun]

pineapple tarts:

MathIzzzFun:

[quote=\"pineapple tarts\"]Sorry, my question was wrong. Correction below.


Mary spent $40 on 4 hairclips and 4 hairbands. 2 hairclips cost as much as 3 hairbands. FInd the cost of 1 hairband.

Hi

4 clips + 4 bands = $40
2 clips + 2 bands = $ 20
Since 2 clips = 3 bands, 3 bands + 2 bands = $ 20 ie 5 bands = $20, so 1 band = $4

cheers.

Many thanks MathIzzzFun,

Can I ask, I keep seeing it as 3 bands + 3 bands = $20.
I cannot see 3 bands + 2 bands. pls enlighten me. [/quote]Hi

hope this helps ...

http://i39.tinypic.com/21o0dwx.jpg\">

cheers.

[pineapple tarts]

Thank you for your help, we solved all the (this type) questions.

[sokk]

Hi,

I need help for the following question.

Michelle has more than 50 hairpins.
If she puts them in packets of 7, she has 5 hairpins left.
If she puts them in packets of 9, she has 6 hairpins left.
How many hairpins does Michelle have?

Thanks!

[Mychildren]

The answer is 96.

Why? Because
>50
so
if packed in 7 with a remainder 5:
49+5 ; 56+5 ; 63+5 ; 70+5 ; 77+5 ; 84+5 ; 91+5
54 ; 61 ; 68 ; 75 ; 82 ; 89 ; 96
if packed in 9 with a total of the above, which no. I can get remainder 6?
6 r 0 ; 6 r 7 ; 7 r 5 ; 8 r 2 ; 9 r 1 ; 9 r 8 ; 10 r 6

So 96 is the answer.

[sokk]

Thank you Mychildren and WCW for the explanations!


WCW, the table u created helps greatly , thanks!

[Mychildren]

Its my pleasure, sokk! I love to crack my head if not will be rusty. Who knows? Someday you might be the one who is solving my queries here! :?:

[ozora]

need help on this following question.

there are 3 different types of tiles.
Tile A- 0.54 kg
Tile B - 0.76kg
Tile C-0.63kg

Kim has a stack of 21 different types of tiles which are made of a combination of Tiles A, B and C. 9 of them are Tiles C and the total mass of 21 tiles is 13.69kg. How many tiles A and B are there respectively?